Same problem with ubuntu 14.10 i7 laptop, two keyboards, and 12GB of ram, when there is a freeze of the system, even for just a few miliseconds the keyboard writes a buffered random char again and again and again... you have to close the app and open it again to have the correct keyboard working.
Also I had problems with nautilus renameing folders but this is another bug but smae problem, ibus...
Same problem with ubuntu 14.10 i7 laptop, two keyboards, and 12GB of ram, when there is a freeze of the system, even for just a few miliseconds the keyboard writes a buffered random char again and again and again... you have to close the app and open it again to have the correct keyboard working.
Also I had problems with nautilus renameing folders but this is another bug but smae problem, ibus...